By using 5 G 1-sepharose 4 B immune affinity column, we recovered approximately 160 ?g purified and soluble IL-2 receptor (sIL-2 R ) from 500ml PHA-stimulated human PBL supernatant. Only one band was showed in SDS-PAGE, its molecular weight was about 44 Kd. The purified sIL-2 R, which blocked the binding of anti-IL-2 R monoclonal antibody with IL- 2 R~+ cell, inhibited (at the higher doses) but enhanced (at the lower doses) the growth of IL-2 dependent cells.

Abstract Objective: To construct and express anti-IL-2R? genetically engineering antibody Fab and identify its biological activity.Methods: PCR were used to construct cloning vector 5G1-pA22 of anti-IL-2R? antibody Fab,by digestion of vector 5G1-pA22, anti-IL-2R? an-tibody Fab gene fragment was obtained and then this fragment was coupled with digesting product of pET28b plasmid by EcoRI and HindIII toget a recombinant expression vector 5G1-pET28b, it was highly expressed in the E. coli BL21(DE3) in the form of inclusion bodies, compoing20% of the total protein. After the renaturation of antibody Fab, its binding activity was identified by ELISA and antibody competitive inhibitionassay in vitro. Results: Anti-IL-2R? antibody Fab was successfully constructed and highly expressed in the form of inclusion bodies, its yield wasup to 1 mg/ml.When applied to ELISA, antibody Fab exhibited good spectfic reactivity with rIL-2R, antibody competitive inhibition assay invitro indicated that antibody Fab can compete with IL-2 for binding IL-2R in activated T cell surface.As a result,the activation and proliferationof T cells were inhibited and inhibition percentage exceeded 90%. Conclusion: Had successfully constructed and expressed anti-IL-2R? geneti-cally engineering antibody. Fab,it had good biological ativity.

Using ~(125)I-labeled anti-IL-2R_? McAb, we investigated the effect of rIL-2 R_? expression . In addition to increasing the IL-2 R_? expression the actived-lymphoblasts, we found that the higher concentration of IL-2 also directly induced the IL-2 R_? expression on the resting PBL, but the peak was at the 5th day. After treated by a higher concentration of IL-2, there was a positive interrelation of time courses between the incorporation of ~3H-TdR and/or ~3H-UR and IL-2 R_? level on resting PBL. This result indicated that it was by means of inducing IL-2 R_? expression that the higher concentration IL-2 caused the proliferation of the resting PBL.

Arsenicals ; pharmacology ; DNA Methylation ; drug effects ; Humans ; Intercellular Signaling Peptides and Proteins ; genetics ; metabolism ; K562 Cells ; Membrane Proteins ; genetics ; metabolism ; Oxides ; pharmacology

Aim To study the anti-inflammatory effects and mechanisms of SBM isolated from Scutellariae radix by high hydrostatic pressure.Methods The effect of SBM on ConA-induced splenocyte proliferation and LPS-induced IL-1? production from peritoneal macrophage was studied in vitro,and the therapeutic effects of SBM on adjuvant-induced arthritis,formalin-induced paw oedema and acetic acid-induced vascular permeability were also investigated.Results SBM(31.25～500 mg?L-1)significantly inhibited ConA-induced splenocyte proliferation,IL-1? production from peritoneal macrophages in vitro.SBM 20 mg?kg-1 inhibited primary and secondary inflammatory reaction,decreased the elevated level of IL-1? released from peritoneal macrophages,inhibited splenocyte proliferation in adjuvant-induced arthritis in rats.Moreover,SBM inhibited formalin-induced paw oedema and acetic acid-induced vascular permeability.Conclusions SBM could inhibit inflammatory reaction.Its mechanisms might be related to the suppression of immune function and inhibition on proinflammatory cytokines production.

Aim To study the anti-inflammatory effects and mechanisms of SBM isolated from Scutellariae radix by high hydrostatic pressure.Methods The effect of SBM on ConA-induced splenocyte proliferation,LPS-induced PGE2 production and protein expression of COX-2 were studied in vitro,and the therapeutic effects of SBM on carragineen-induced paw oedema and acetic acid-induced twisting reaction were also investigated.Results SBM(15.63～250) mg?L-1 significantly inhibited LPS-induced PGE2 production and COX-2 enzyme activity in peritoneal macrophages in mice.SBM(125 mg?L-1)also inhibited ConA-induced protein phosphorylation of p38 MAP kinase and LPS-induced COX-2 protein expression.SBM(10,20 mg?kg-1)inhibited carragineen-induced paw oedema and acetic acid-induced twisting reaction.Conclusion SBM can inhibit inflammatory reaction.Its mechanisms may be related to the suppression of inflammatory medium production.

Objective To comparO thO clinical OffOct of capOcitabinO combinOd with oxaliplatin or irinotOcan in thO trOatmOnt of colorOctal cancOr with livOr mOtastasis. Methods From January 2016 to January 2018, 100 patiOnts with colorOctal cancOr complicatOd with livOr mOtastasis admittOd in Jinhua COntral Hospital wOrO sOlOctOd and randomly dividOd into control group and obsOrvation group according to thO random numbOr tablO mOthod,with 50casOs in Oach group. Both two groups wOrO givOn 1 000mg/m2 capOcitabinO twicO a day trOatmOnt for 2 consOcutivO wOOks. In addition, thO control group was trOatOd with 130mg/m2 oxaliplatin, whilO thO obsOrvation group was trOatOd with 150mg/m2 irinotOcan. ThO advOrsO rOactions, short-tOrm Officacy, mOdian survival timO and progrOssion survival timO wOrO obsOrvOd and comparOd bOtwOOn thO two groups.Results ThO objOctivO rOmission ratO of patiOnts in thO obsOrvation group was 48.00% , which was significantly highOr than 36.00% in thO control group (χ2 =7.253,P<0.05).ThO disOasO control ratO of thO obsOrvation group was 80.00% , which was significantly highOr than 66.00% of thO control group (χ2 =9.273,P<0.05).ThO mOdian total survival was 12 months and 14 months in thO two groups, thO mOdian progrOssion-frOO survival was 4 months and 5 months in thO two groups, thO survival of thO obsOrvation group was significantly bOttOr than that of thO control group (χ2 =8.676,P<0.05). ThO incidOncO ratO of diarrhOa in thO obsOrvation group was 14.00% , which was significantly lowOr than 34.00% in thO control group ( χ2 =5.967, P<0.05).ThOrO wOrO no statistically significant diffOrOncOs in thO incidOncO ratOs of advOrsO rOactions bOtwOOn thO two groups ( all P > 0. 05 ), including anOmia, thrombocytopOnia, lOukopOnia, stomatitis, hOmorrhagO, pOriphOral nOuropathy, livOr injury, hand-foot syndromO, nausOa and vomiting, and alopOcia.Conclusion For patiOnts with colorOctal cancOr with livOr mOtastasis, capOcitabinO combinOd with irinotOcan can OffOctivOly improvO thO clinical Officacy of patiOnts, grOatly improvO thO patiOnts＇tolOrancO, but also can rOducO thO incidOncO ratOs of advOrsO rOactions in patiOnts.Its OffOct is bOttOr than capOcitabinO combinOd with oxaliplatin, and is worthy of popularizing in clinic.

Objective To investigate the association between resting heart rate(RHR)and dyslipidemia. Methods A total of 772 subjects(average age:40. 1 ± 11.8 years;male:74. 7%)were recruited by random sampling method from medical checkup population. The survey data included resting heart rate,blood lipid and other metabolic parameters. The subjects were divided into three groups according to the RHR,as RHR ＜ 70 bpm,70 bpm ≤ RHR ＜ 80 bpm,RHR ≥ 80 bpm groups. Results RHR were positively correlated with triglyceides (TG),as well as total cholesterol(TC)(r = 0. 316 and r = 0. 110 respectively,all P value ＜ 0. 05). Low RHR had no significant correlation with HDL-C or LDL-C. The prevalences of hypertriglyceridemia and hypercholesterolemia increased significantly with RHR elevation(χ2 = 7. 214 and 5. 285 respectively,all P value ＜ 0. 05). By logistic regression analysis,adjusted for BMI,gender,serum creatinine,serum uric acid,fasting blood glucose and age,we found that compared with RHR ＜ 70 bpm group,the odds ratio(OR)values for hypertriglyceridemia was 1. 540 (95%CI:1. 086-2. 185,P=0. 016)in 70 bpm≤RHR ＜80 bpm group and 1.640(95% CI:1.067 -2.523,P =0. 024)in 80 bpm ≤ RHR group,and the OR values for hypercholesterolemia was 1.197(95 % CI: 0.749 - 1.913,P=0.453)in70 bpm≤RHR ＜80 bpm group and 1.814(95% CI:1. 036-3. 177,P =0.037)in 80 bpm≤RHR group. Conclusions RHR is independently and positively correlated with the prevalence of hypertriglyceridemia and hypercholesterolemia and the blood levels of both lipid. RHR has no significant correlation with HDL-C or LDL-C level.

0.05). Significant difference existed between the patients and endoscopy-negative (pathological reflux) and endoscopy-negative (physiological reflux) (P

Objective: To study the anti-tumor effect of recombinant human MUC1-MBP. Methods: The C57BL/6 mice were in oculated with MUC1-MBP by subcutaneous. MUC1 specific CTL activity of spleen were determined by MTT; The effects on prevention and treatment of tumor were observed by establishing lewis lung cancer-carrying mice. Results: The cytotoxicity of CTL from immunized mice to the MCF7 and Lewis lung cancer cells respectively was (47.7?4.3) % and (67.5 ?6.5) %; 5?10 5 lewis lung cancer cells following immunization were injected iv into C57BL/6 mice, after three weeks, the number of lung and tail tumor colonies was 51 and 5 for PBS and MUC1-MBP groups respectively and the suvival time was significantly delayed in immunized mice. The average volume of tumors in mice with MUC1-MBP was 386 mm 3 wherea control group was 4 000 mm 3 at tumor treating experiment. Conclusions: Recombinant human MUC1-MBP have significantly effects on prevention, treatment and inhibiting metastases of tumor. Our results suggested that the recombinant MUC1-MBP might be used to develop protein vaccine against human carcinoma.